Vent Opener Application Guide

eu43016-836

Greenhouse Growing Tips

Great greenhouse tips and useful information to
keep your greenhouse running efficiently.

  ::Construction
Tips

  ::Garden
Tips

  ::Articles


Vent
Opener Application Guide

Model

Roof
Vent

Side
Vent

Heavy
Vent

Windy
Site

Sesam

Yes

No

No

No

Univent

Yes

Yes

No

Yes

Bayliss
T.S.

Yes

Yes

No

Yes

Hydraulicheck

Yes

Yes

No

Yes

Super

Yes

No

Yes

No

Note:
All vent openers can be installed in series
to open a long or heavy vent.

Vent
Design


To avoid excessive temperatures
in the greenhouse, it is necessary to have enough
vents of adequate size. Ideally, roof vents should
equal 20% of the floor area, plus lower fresh air
intake vents equal to 10% of the floor area. Manual
opening and closing of vents is easily done, but
requires two trips to the greenhouse daily without
exception. One sunny day with vents closed and plants
look like last week’s salad or candidates for dried
flower arranging. A cold night with vents left open
will cause some plants to shiver to death and your
heating system may croak from exhaustion. (Or you
will croak when you get the heating bill!) So give
the plants (and yourself), the care and peace of
mind deserved – automate the vents!



Solar-Powered
Vent
Openers

How
they work: The opener has a metal cylinder containing
a mineral wax which expands with heat. This pushes
a piston that opens the vent via a leveraged arm.
As the temperature cools, the wax shrinks and a
strong spring closes the vent and resets the piston.
Opening and closing are gradual adjustments, allowing
just the right amount of air flow for cooling.


Free Garden Catalog